Orifice-meter connection



. 1 1927o K H. M. HALDEMAN ORIFICE METER CONNECTION Filed April 24. 1926 INVENTOR l7. HHLDEFJHH ya/74 x ATTORNEYS Patented June 7.1921. b

UNITED STATES PATENT OFFICE.

HARRY M. HALDEMAN, OF LOS ANGELES, CALIFORNIA.

This invention relates t nections. pipe lines carrying any flow of which is to ORIFICE-M'ETEB CONNECTION.

*5 0 orlfice meter con- These connections are placed in fluid or liquid, the be measured. It is the custom to secure an orifice meter plate in the pipe line, which plate has it accurately formed to an openingthrough a standard size;

there is a by-pass provided around the connection in which a meter is placed for indicating the flow. By reason of the fact that there is frequently a considerable difference in pressure on the two sides of the plate,

throughtheorifice has a high velocity, and abrasion or wire-drawing of the orifice often occurs.

to remove these orifice meter time to time and substitute a new plate an accurately cut orifice.

Hence, it is necessary plates from with It has been the custom to clamp the orifice meter plate between flanges on the ends of two abutting pipe sections and these flanges threaded onto the ends of In order to effect the removal plate, it is necessary to backing the flanges away remove the pressure on tory to its removal. frequently strains tween the flanges and the pipe sections, an leaky joints may result from this.

have usually been the pipe sections.

of the orifice provide means for from each other to the plate prepara- When this is done it the thread connection bed' provide a flange 5 corresponding to each It has been attempted to obviate the necessity for threadin t e flanges on the ends of the pipe sections y forming integral collars on the ends of the pipe sections,

back of which flanges are placed carrying bolts which enable the collars to be p orifice plate ter construction produces ressed against the placed between them. This lata serviceable nonleaking joint but it does not provide for effecting the separation of the collars to facilitate the replacement of the orifice plate.

The general object of this invention is'to provide an orifice meter connection of this type which will avoid the necessity for a thread connection between the flanges and the pipe sections and which enables theim tegral collars of the pipe sections, provide simple means for to be used on the abutting ends and at the same time to enabling the jointto be opened up to facilitate the replacement of the orifice plate.

Further objects of the pear hereinafter.

The invention consists and combination of par invention will apin the novel parts ts to be described Application filed April 24, 1926. Serial No. 104,265.

hereinafter,-all of which contribute to produce an efficient orifice-meter connection.

A. preferred embodiment of the invention is described in the. following specification,

while the broad scope of the invention is pointed out in theappended claims.

Inthe drawing:

Figure 1 is a view illustrating an orifice meter connection embodying my invention, the upper portion of the view. showing the connection in longitudinal. section. and the lower' portion showing the joint in side elevation. The section in this view is taken about on the line 11 of Fig. 2.

Figure 2 is a vertical cross section taken on the line 2-2 of Fig. 1.

Figure 3 is a section taken on the line 3-3 of Fig. 2, and passing through one of the walls of the connection at the edge of the meter plate, certain parts being broken away; this view particularly illustrates how the meter plate is held centered in the conpipe section and these flanges 5 are preferably loose on the pipe. Any suitable means is provided for drawing these flanges 5 together so as to clamp-the laps or collars 3 against the sides of-the orifice plate to produce a tight connection. For this purpose I may use ordinary bolts 6 and nuts 7.

desired, on each side of the orificeplate 4, a

gasket 8 of relatively soft material may beprovided,

In order to insure centering of the plate 4, I may provide two centerin dowel pins 8. These dowel pins are welde to the plate 4 at its edges and rest uponthe edge of one of the col ars 3 (see Fig. 3). When it is necessary to replace the orifice plate 4, the bolts 6 should be loosened and removed. In order to enable the laps or collars 3 to be forced apart, I provide means for forcing the flanges 5 apart and the thrust of this separating movement is imparted to the pipe sections 1 and 2. In order to accomplish this I provide thrust shoulders or back-up rings 9 formed or secured on the pipe sections back of each flange 5. I prefer to produce these shoulders by welding a ring around each pipe section at this point, leaving space enough between the rings and the laps 3 topermit free -rotation of the flanges 5. In addition to this I provide means for exert-- 'ing a separating thrust between the flanges.

For exam lo, I may provide two or more diametrica 1y op osite set screws 10. These set screws may e threaded in one of the flanges and have their ends abutting against bination of two opposed pipe sections havration ofthe collars and ing integral collars at their adjacent ends, a pipe flange corresponding to each collar and mounted. loosely on its corresponding pipe section, an orifice meter plate between the collars andhaving an opening through it, connecting means for drawing the flanges together -to clamp the meter plate between the collars, a shoulder ring corresponding to each pipe connection and disposed adjacent. to its corresponding flange, and means assomated with the flanges for forcing the same apart when the said connecting'means for the flanges have been removed, said rings operating to take the thrust of the flanges in the separating movement to effect the sepapermit the removal of the meter late. I

, 2. In an orlfice-meter connection, the combination of two opposed pipe sections having integral collars at their adjacent ends, a pipe flange corresponding to each collar and mounted loosely on its. corresponding pipe section, an orifice-meter plate between the collars and havin an opening through it, connecting means flor drawing the flanges together to clamp the meter plate between the collars, a shoulder ring corresponding to each pipe connection and welded to the same adjacent to its corresponding flange, and bolts carried on the flanges for moving them apart when the said connecting means have beenremoved, said rings operating to take the thrust of the flanges in the separating movement to eflect the separation of the collars and permit the removal of the meter plate.

3. In an orifice-meter connection, the combination of two opposed pipe sections having integral collars respectively at their adjacent ends, a pipe flange oneach pipe connection corresponding to each collar and mounted loosely on its corresponding pipe, :1 meter-plate disposed between the collars and having an opening through it, clamping bolts connecting the flanges to clam) the meter plate between the collars, a shou (ler ring corresponding to each pipe and welded to the same adjacent to its corresponding flange, and set-screws mounted in one of the flafiges and abutting against the opposite'flange for separating the flanges when the clamping bdlts have been removed. said rings operating to take the thrust of the flangesin the separating movement and efl'ect a separation of the collars to permit the removal of the meter-plate.

' Signed at Los Angeles, California, this 17th day of April, 1926.

' HARRY M. HALDEMAN. 

